Cyanobacterial Harmful Algal Blooms (CyanoHABs) produce toxins and odors in public water bodies drinking water. Current process-based models predict algal blooms by modeling chlorophyll-a concentrations. However, concentrations represent all algae hence, a method for predicting the proportion of harmful cyanobacteria is required. We proposed technique to based on source codes Environmental Flui...

A number of hydraulic structures have been installed along the Yeongsan River, including an estuary dam and two weirs (Seungchon Juksan). While these aid in regional water security use reduce flooding, they flow summer, thereby frequently causing algal blooms. This study simulated bloom quality characteristics sections River South Korea under different weir operating conditions using Environmen...

Floating treatment wetlands (FTWs) are widely used in surface water. The nutrient removal performance depends on both physical processes and chemical/biological transformations FTWs. However, research describing the coupling of hydrodynamic water quality system remains limited. Therefore, a coupled three-dimensional model for FTWs was developed based Environmental Fluid Dynamics Code (EFDC). Ad...

Abstract Saltwater intrusion in estuaries has become a serious environmental problem, such as the Pearl River estuary (PRE). In this study, we used fully validated three-dimensional hydrodynamic model EFDC to numerically investigate saltwater PRE during dry season of 2007-2008. Based on measured salinity, an abnormally strong occurred Humen Channel February 2008. The twice month varying extents...

Green algae play an important role in ecosystems as primary producers, but they can cause algal blooms, which are socio-environmental burdens responding to them requires water resources from dam reservoirs. This study proposes alternative for reducing blooms through operation without using additional resources. A novel oscillation flow concept was suggested: oscillating discharge of irregular f...